H5N1 report conducted yesteryear the UAB as well as the IPHES confirms a continuous presence of montane coniferous forests from the Pyrenees to the Mediterranean coast from 50,000 to 15,000 years ago, demonstrating their resilience to the extreme as well as always changing climate weather condition of the period.
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| General persuasion of the Cova Gran site (Les Avellanes-Santa Linya, Noguera, Lleida) [Credit: CEPAP-UAB] |
The analysis of charcoal from the hearths of the Cova Gran settlement, located inwards Les Avellanes-Santa Linya, Lleida at 385 metres to a higher house bounding main level, confirms that montane forests of the northeastern purpose of the Iberian Peninsula covered the Pyrenees as well as reached the Mediterranean coast around 50,000 to 15,000 years ago, amongst a large predominance of montane pino trees as well as close belike Scots pine.
The report also allowed researchers to obtain detailed information on the type of firewood preferred yesteryear Homo neanderthalensis as well as Homo sapiens, who successively inhabited the Pyrenean shelter during this period.
The interrogation was conducted yesteryear Rafael Mora, Jorge Martínez-Moreno as well as Miquel Roy from the Centre for the Study of Prehistoric Archaeological Heritage, Universitat Autònoma de Barcelona (CEPAP-UAB), inwards collaboration amongst Ethel Allué, from the Catalan Institute of Human Paleoecology as well as Social Evolution (IPHES) as well as the Rovira i Virgili University (URV), as well as Alfonso Benito-Calvo, from the National Centre for Research on Human Evolution (CENIEH). It was published inwards the mag Review of Palaecobotany as well as Palynology.
Researchers analysed a full of to a greater extent than than 1,200 carbon fragments from the hearths of around 15 archaeological units. "The anthracological analysis of such a chemical compound used during thence many years every bit is Cova Gran, together amongst information from other sites inwards the region, indicates a hegemonic presence of Scots pino inwards the northeast of the Iberian Peninsula as well as demonstrates that despite the occurence of extreme climate changes, the montane coniferous forests comprehend was continuous", says IPHES researcher Ethel Allué.
The attain of periods covered yesteryear the report climatically corresponds to 2 marine isotope stages (MIS): the MIS 3, (between 59,000 as well as 29,000 years ago) amongst relatively brusk warm periods alternated amongst mutual frigidity cycles, as well as the MIS 2 (from 29,000 to 15,000 years ago), amongst extremely mutual frigidity conditions.
"The resilience of these pino trees allowed them to suit to rigorous ecological as well as environmental conditions, colder as well as to a greater extent than arid than now, as well as hold upwardly able to alive inwards the plains as well as Mediterranean pre-coastal range", the researcher affirms.
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| Detailed persuasion of a theater indentified inwards the stratum corresponding to the Early Upper Paleolithic at the Cova Gran de Santa Linya [Credit: CEPAP-UAB] |
"The registries made at Cova Gran inwards Santa Linya allows us to delve deeper into the aspects of the site's landscape as well as the biogeography of a tree which was essential to the survival of Ice Age hunter-gatherers", indicates CEPAP-UAB Director Rafael Mora. "The continuity inwards choosing this type of firewood at this site must bring been due to its abundance inwards the immediate surroundings, fifty-fifty though existence slow to lite as well as a high unloose energy content also favoured the intentional gathering of this type of wood. In consistency, this allows us to strengthen our hypothesis of the continuous presence inwards the share of these stable as well as resilient montane pino forests", he concludes.
Scots pino tin currently hold upwardly flora inwards the attain of the northeastern share of the Pre-Pyrenees, at altitudes greater than 600 metres. Current climate conditions, which began to look around 15,000 years ago, made them retrocede to higher as well as colder altitudes, patch other species such every bit Aleppo pine, oak as well as holm oak began to populate the lower wooded areas.
The Archaeological Importance of the Cova Gran de Santa Linya
The archaeological site of Cova Gran de Santa Linya, discovered inwards 2002, measures over 2,500 foursquare metres as well as is considered to hold upwardly essential for the report of human presence inwards the northeast of the Iberian Peninsula. Its broad chronological spectrum ranges from 50,000 to 7,000 years ago, which allows researchers to reconstruct the life of humans living inwards Catalonia's pre-Pyrenees region.
It is 1 of the few sites inwards the Mediterranean inwards which moments of "transition" bring been identified, such every bit that of the concluding Neanderthals as well as the appearance of the kickoff modern humans, or the minute inwards which hunter-gatherers gave means to the kickoff farmers as well as herders.
In 2016 engravings dating dorsum to the Upper Paleolithic were discovered on the walls of the stone shelter as well as are considered to hold upwardly the earliest artistic representations existing inwards Catalonia. This year, the caput of a deer engraved inwards os was flora inwards the layer of the same fourth dimension period.
Throughout these 15 years numerous cloth remains bring been recovered, including assegais, needles as well as os ornaments such every bit a perforated deer molar from the Upper Paleolithic's Magdalenian epoch. Discoveries from the Neolithic current include several layers of livestock stabling, known every bit pen diposit.
With regard to hearths, it is 1 of the sites inwards the Iberian Peninsula inwards which the greatest issue of hearths bring been identified. This demonstrates the importance of burn downwardly as well as its administration for the daily life of Neanderthals as well as Homo sapiens. This source of unloose energy non exclusively allowed them to obtain as well as procedure nutrient as well as generate lite as well as heat. It also actively contributed to cementing the relationships amid components of the groups inhabiting Cova Gran.
Source: Autonomous University of Barcelona [July 30, 2018]
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